复杂构造地震叠前深度偏移方法及应用

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英文篇名：The method of complex structure imaging and its application 中文刊名：煤田地质与勘探 英文刊名：Coal Geology & Exploration 作者：赵玉莲 ; 李录明 ; 王宇超 ; 李斐 英文作者：ZHAO Yu-lian~(1 ; 2) ; LI Lu-ming~1 ; WANG Yu-chao~2 ; LI Wen~3(1.Chengdu University of Technology ; Chengdu 610059 ; China ; 2.Northwest Branch of China Petroleum Exploration and Development Research Institute ; Lanzhou 730020 ; China) 中文关键词：复杂构造 ; 叠前深度偏移 ; 层速度 英文关键词：complex structure ; pre-stack depth migration ; interval velocity 出版日期：2006-12-30 机构：成都理工大学,成都理工大学,中国石油勘探开发研究院西北分院,中国石油勘探开发研究院西北分院 四川成都610059,中国石油勘探开发研究院西北分院,甘肃兰州730020,四川成都610059,甘肃兰州730020,甘肃兰州730020 年：2006 期：06 出版单位：煤田地质与勘探

摘要

地震勘探复杂构造和深层构造的精确成像,由于叠后时间偏移方法自身的局限性而不能解决。叠前偏移技术是解决精细速度分析和复杂构造成像的有效手段之一,也是近年来国内外地震资料成像的发展趋势,是解决速度横向变化剧烈的复杂地区的地震资料成像的关键技术。结合鄂尔多斯西缘工区地震资料,给出了复杂构造成像的方法、实现过程与成像效果。研究结果表明,采用叠前深度偏移技术对于复杂构造的描述相对于叠后偏移技术有很大的优势。
With the development of technology in oil and gas exploration and production,the complex structure imaging and deeper structure imaging become more and more important in seismic exploration.Post-stack time migration can not solve the problem of imaging of complex structure because of the limitation of the method itself.Pre-stack migration technique is one of the most effective methods to solve the meticulous velocity analysis and complex structure imaging.It is also a development tendency of seismic data imaging,and it is the key technique that can resolve the complex structure imaging in areas where lateral velocity varies violently.By the case from western edge of Ordos Basin,this paper gives the method of complex structure imaging,the steps of realization and the result of imaging.The result of research indicates that the pre-stack depth migration has greater dominant position than post-stack migration in describing the complex structure.

引文

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